qaxisstep_p.h

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//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.

#ifndef Patternist_AxisStep_H
#define Patternist_AxisStep_H

#include "qemptycontainer_p.h"
#include "qitem_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist
{
    class Q_AUTOTEST_EXPORT AxisStep : public EmptyContainer
    {
    public:
        AxisStep(const QXmlNodeModelIndex::Axis axis,
                 const ItemType::Ptr &nodeTest);

        virtual Item::Iterator::Ptr evaluateSequence(const DynamicContext::Ptr &) const;
        virtual Item evaluateSingleton(const DynamicContext::Ptr &) const;

        inline Item mapToItem(const QXmlNodeModelIndex &node,
                              const DynamicContext::Ptr &context) const;

        virtual SequenceType::List expectedOperandTypes() const;
        virtual SequenceType::Ptr staticType() const;

        virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context,
                                          const SequenceType::Ptr &reqType);

        virtual ItemType::Ptr expectedContextItemType() const;

        virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;

        virtual Properties properties() const;

        QXmlNodeModelIndex::Axis axis() const;

        inline ItemType::Ptr nodeTest() const
        {
            return m_nodeTest;
        }

        void setNodeTest(const ItemType::Ptr &nev)
        {
            m_nodeTest = nev;
        }

        static QString axisName(const QXmlNodeModelIndex::Axis axis);

        virtual ID id() const;
        virtual PatternPriority patternPriority() const;

        inline void setAxis(const QXmlNodeModelIndex::Axis newAxis);

    private:
        typedef QExplicitlySharedDataPointer<const AxisStep> ConstPtr;

        static const QXmlNodeModelIndex::NodeKind s_whenAxisNodeKindEmpty[];

        static bool isAlwaysEmpty(const QXmlNodeModelIndex::Axis axis,
                                  const QXmlNodeModelIndex::NodeKind nodeKind);

        QXmlNodeModelIndex::Axis    m_axis;
        ItemType::Ptr               m_nodeTest;
    };

    void AxisStep::setAxis(const QXmlNodeModelIndex::Axis newAxis)
    {
        m_axis = newAxis;
    }

}

QT_END_NAMESPACE

QT_END_HEADER

#endif